Pumping apparatus.



"No. 857,477. PATENTED JUNE 18, 1907. G. J. manner.

PUMPING APPARATUS. APPLIUATION FILED APEJ'] p906.

'INV'ENTOR ATTORNEYS GEORGE J. nuances, or N WA K,'NEW JEns nY.

PUh 'lFlltG APPARATUS.

Bpecifioation of Letters Patent.

."Patented June 18, 1907.

Application filed April 17,1906. Serial No. 312,072.

To call whom it 7:"i/(Ljj concern.-

Be it known that'l, Gnoncn J. Munnoox, a citizen of the United States, residing at Newark, in. the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Pumping Apparatus and I do hereby declare the following to be a lull, clear, and exact description of the same, such as will. enable others skilled in the art to which it appertains to make and use the same.

My invention relates generally to pumping apparatus operated by intermittent How of fluid through a pi pc or passage, and particularly to pumping apparatus adapted to be operated by the exhaust froi'n. fluid pressure motors such as steam engines or gas or oil explosion engines.

The pumping apparatus herein described is particularly intended for maintaining circulation of coolinglluid through the jackets of internal combustion engines, such as gas engines, but is not limited to such use. It embodies improvements upon the pumping apparatus illustrated and described in my Patent No. 765,43 dated July 19th, 1.904. The objects of my invention are to increase the efliciency of pumping apparatus operated by intermittent pulsatory fluid pressure; to adapt such apparatus for operation by pulsationsrecurring with extreme frequpncy; to reduce to a minimum the number o'liavalves required, and even to dispense with i alves altogether; to adapt the apparatus for pumping against relatively high heads and for taking water below the level of the pump; to make the apparatus efhcient in operation, positive in action; simple, free from liability to derangement, and inexpensive; and to make the apparatus simple and attractive in design and external appearance.

l will "now proceed to describe my invention with reference to the accompanying drawing in which one cmhodin ient oi my invention is illus" ted, and will then point out the novel features in claims.

in the said drawings: Figure 1 shows a gas engine, with piping constituting a circulating system for supplying cooling water to the one" lo jaoket, and a pump elubodyiiig my in motion, said pinup being shown in section.

Fi 2 is a detail view showirn in section the b 2:8

lower portion of the pump and the check valve formin g a foot-valve therefon Referring now to the drawings and at first to Fig. 1, the pump there shown oomprisespan air chamber 1, provided at the sides with 1n.

let openings 2 and at the bottom with a dis charge opening 3, At substantially the con-- ter of the air chamber is a downwardly projecting slightly tapered pipe 4 adaptedto be connected at the top to the exhaust pipe of the engine or to any other source of supply of motive fluid. 5 designates an annular chamber surrounding the portion of chamber 1 in which are the openings 2. 7 designates the cylinder of the engine, 8 the exhaust pipe thereof, 9 a standpipe having a T-connection with said exhaust pipe and connected to the inner pipe 4 of the pump, 10 a reservoir for cooling water, 11 a water supply pipe connecting said reservoir to chamber 5, 12 a pi e leading from outlet 3 to the jacketof t 0 engine cylinder and 13 a pipe conveying the water from said jacket back to tank 10.

The air chamber 1 comprises a contracted portion 14 near mouth of the inner pipe 4,

and an enlarged portion 15 some distance above the mouth of said pipe 4:, and an intermediate neck 16, constituting a somewhat contracted passage between chamber 15 and the contracted portion 14; and the openings 2 are in this neck 16.

The operationoi the pump is as follows: Then the engine exhausts, a quick sharp pressure is exerted in the exhaust pipe and is communicated through the standpipe 9 and inner tube 4 to water within the neck 16 and contracted portion 14 of the pump. The water within this neck 16 and contracted portion 14 is thereby forced through the outlet 3 into the pipe '12 and thence through the engine jacket and pipe 13 back to the tank 10.

While it might seem that the water instead of passing through the outlet 3 and pipe 12,

-would be forced back through openings 2,

chamber 5 and pipe 11, I find that in practice this is not the case, at least not to any considerable extent. Without committing myself to any particular theory of operation, I will state that I believe the relative freedom irom back flow of the water through chamber 5 and pipe 11 is due to the following circumstances: First, the action-of the exhaust pressure is very sudden and is exerted in the direction of the outlet 3, which offers to such a sudden flow, less resistance than the relatively contracted openingsfl, even thoughthe total area ofnsa-id openings 2 is the same as the area of outlet'3 second, the action of the exhaust is exerted upon a column air chamber 15and pipe 9 succeeds pressureof Water of considerable height in the stan dpipe formed b the internal tube 4 and .pipe 9, theeffect the action of the exhaust on the Water in the standpipe being first to force ,a jet of water from said 'st-andpipe through the outlet 3 and then, aspartial vacuum in due'to the passage of the exhaust past the upper end of said standpipe, water is drawn back into the standpipe and'neck 16,'inertia of the moving column of water and other conditions uniting to cause such Water to be drawn to the standpipe from chamber 5 to the neclr portion '16 rather than from the spkace beyond the outlet 3; third, the air 0 a mber 15, which I have found by experiment to exert a marked influence upon the effective operation of the pump and fourth,

the neck portion 16, forming a {somewhat contracted space surrounding the pipe 4 for a considerable distance'back from the mouth thereof. b i

It will be noted that since this pump has no piston or valves interfering with natural 'iree circulatibn ofthe Water, the natural or thermo-siphon circulation of the Water is not interfered with in any way, the effect of the pump being added to that of the natural circulation. I

I have found. this wrap to be particularly efiective on very big speed engines 'or e'ngines having a large number of clindcrs, so that the exhaust impulses succeec each other Withextreme rapidity. When pumping against the small, head which commonly ex-- ists in circulating systems 'of BXPlOSlIl' engmes, no check valve in the discharge is necessa'ry; but when the engine is required to it may happen that this valve Wil pump against ahead of more than a few feet, I may provide a check valve 6 1n the discharge pipe as indicated in Fig, Such check valve is of particular use in starting up against a considerable head. If the pump is operated by an engine runningiat hi h speed I remain open practically all the timelwhile the engine is running at full speed. i v

I commonly continue the contracted por tion 14 beyond the outlet 3 for some distance, employing for the purpose a special fitting 17 which is larger at its receiving than at its discharging end. Also to adjust the action of the pump'to difl'erent engines, I at times provide a regulating-cock l 8 in pipe 9 so that by this cock I ma regulate the efi'ective action of the beat of the exhaust onthe li'quidin the standpi e. I E

It willbe understood that the pump herein described is not limited in application to use as a circulating pump or to operation by the exhaust of explosion or steam engines. It

ma he used for the handling of variousfluids,

vinc uding' water or other fluid. carrying considerable uuantities of sand orsediment. It is particu arty suitable for use asa, bilge 'pump. The entire absence of Workingparts makes its-particularly suitable for handling strong acid or alkalies as it may be made of chemically inactive material or may be pro-.

vided with a chemically inactive lining.

The pump herein illustrated and described is likewise illustrated and. described and claimed broadly but not specifically in m T applicationlor Letters Patent filed March 1st, 1906, Sr. No. 303,598.

*1. In pumping apparatus such as described, a chamber having an outlet and one ormore inlets, said inlets relatively restricted with respect to said outlet, and means for transmitting pulsating pressure from an engine exhaust or other source of pulsating fluidpress'ure toliquid within saidchamber.

2. In pumping apparatus such as described, a chamber having an outlet and one or more inlets, said inlets relatively restricted with respect to said outlet, the upper portion of said chamber closed and forming an air chamber, and means for transmitting pulsating pressure from an engine exhaust or other a source of pulsating within said chamber. p v

3. In pumping apparatus such. as described, a chamber having a"relativelyaree outlet and one on more relatively restricted inlets, and a pa ssage within sar'd chamber adapted for connection to an engine exhaust or other source oi pulsatin fluid-pressure, and opening toward said outfit.

4. In pumping apparatus such as described, a chamber having a relatively free outlet and-one. or more relatively restricted inlets, the upper portion of said chamber closed andforming an air chamber, and a passage within said chamber adapted for connection to an engine exhaust or other source of pulsating fluid-pressure, and open ing toward saidoutlet.

5. In pumping apparatus such as do scribed, a chamber having an air-space at one end and an outlet at the other, and a passage within said chamber adapted for connection to a source of supply of motive fluid and opening toward said outlet, said chamber having a neck portion surrounding said passage and connecting said -airspace and outlet,

.having 'one or more inlet openingsin said neckportion. I

y '7. 111 pumping apparatus such as desr'arilued,v a chamber-forming atone end an air fluidpressure to liquid '1 r 5 and having one or. more inlet openings in said space and having an outlet at the other end and one or more inlet openings in its sides, said chamber provided with a passage having a mouth directed toward said outlet, said passage adapted for connection to a source of supply of motive fluid.

8. In pumping apparatus such as described, a chamber comprising an air space and a 1i uid space and having an outlet, one or more ateral inlets, and a passage adapted for connection to external operating means and having a mouth directed toward said,

in such circuit consisting of a chamber hava source of supply of liquid,

ingan inlet. receiving liquid from the circuit and having an outlet, separated from said inlet, connected to such circuit, and having also a closed air space, said chamber having also a passage projecting into the liquidspace of the chamber toward said outlet and adapted for connection to an engine exhaust or the like.

11. An internal combustion engine comprising a cooling jacket and a circulating systern therefor comprising an exhaust-operated pump having an air and water chamber having an inlet and an outlet, the former relatively festricted w th respect to the latter, and having a standpipe connected to the engine exhaust and directed to discharge toward said outlet, a valveless conduit connecting said inlet to the discharge port of the engine jacket, and.a conduit connecting they" outle't'to the inlet port of the engine jacket.

In testimony whereof I aflix my signature, in the presence of two witnesses.

GEORGE J. MURDOCK; Witnesses:

J. J. ROBINSON, H. M. MARBLE. 

